PROBLEM TO BE SOLVED: To provide a levee plastering machine, in which a scraping quantity of a top place is changed according to the height of the top place of an old levee so that the levee can be reduced in a vertical interval and formed into a smooth shape.SOLUTION: A top place treating rotor 41 attached to the leading end of a rotor supporting member 44 can be rocked in a vertical direction by the rotation of the rotor supporting member 44, and a rotation center axis 41a of the top place treating rotor 41 is equipped with a grounding member 50 shorter than a tilling pawl 46. The rotor supporting member 44 is urged to rotate downward by dead weight. A grounding face 52 of the grounding member 50 is a tabular member formed to have a uniform distance from a line horizontally normal to the rotation center axis of the top place treating rotor 41. The grounding face 52 is formed into such an arcuate shape as is centered in a side view by a center C of the rotation track of the end portion of the tilling pawl 46, and in that the central angle of the arc is an angle α larger than an angle θ, at which the rotor supporting member 44 can turn vertically.COPYRIGHT: (C)2014,JPO&INPIT【課題】旧畦の天場の高さに応じて天場の削り量を変化させ、畦の天場の高低差を減らして滑らかな形状にすることができる畦塗り機を提供する。【解決手段】ロータ支持部材44の先端に取り付けられた天場処理ロータ41は、ロータ支持部材44の回動によって上下方向に揺動可能とし、天場処理ロータ41の回転中心軸41aには耕耘爪46よりも短い接地部材50を設ける。ロータ支持部材44は自重によって下方向へ回動するように付勢されている。接地部材50の接地面52は、天場処理ロータ41の回転中心軸と水平に直交する線からの距離が均一になるように形成された板状部材である。また、接地面52は、側面視において耕耘爪46の端部の回転軌道の中心Cを中心とする円弧形状であり、円弧の中心角は、ロータ支持部材44の上下回動可能な角度θよりも大きい角度αである。【選択図】図5
